结构调节分子对顺-(1,3,5)-胺基环己烷-均苯三甲酰氯复合纳滤膜性能的影响

The effect of structure tailoring molecules on the separation performance of cis,cis-1,3,5-triaminocyclohexane-trimesoyl chloride nanofiltration membrane

以间苯二甲酰氯、4-哌嗪哌啶、3-[(2-氨基乙基)-二甲胺]丙烷-1-磺酸作为结构调节分子,分别考察了添加每种分子对顺-(1,3,5)-胺基环己烷-均苯三甲酰氯纳滤膜的水通量和盐截留率的影响.当添加间苯二甲酰氯时,膜的水通量下降.考察了顺-(1,3,5)-胺基环己烷-间苯二甲酰氯纳滤膜的性能,该膜水通量为2.7L/(m2·h·MPa),对盐的截留顺序为Na2SO4(92.3%)>MgCl2(76.6%)>NaCl(54.5%).当添加4-哌嗪哌啶时,膜的水通量增加.当添加3-[(2-氨基乙基)-二甲胺]丙烷-1-磺酸时,膜的水通量随其浓度增加呈先增大后减小的趋势.当添加少量结构调节分子时,各膜对Na2SO4的截留率都轻微下降;当添加量较多时,截留率下降幅度较大.

The effects of isophthaloyl dichloride, 4-piperazine-piperidine and 3-[（ 2-aminoethyl ）-dimethylammonio ] propane-1-sulfonate on the separation performance of cis, cis-1 3 , 5-triaminocyclohexane-trimesoyl chloride nanofiltration membrane were studied respectively. When isophthaloyl dichloride was added？ the flux of membrane was dropped？ then the separation performance of cis, cis-1,3,5-triaminocyclohexane-isophthaloyl dichloride membrane was studied,which exhibited aflux of 2. 7L /（m2 h MPa） and a salts rejection order of Na2S0 4 （92. 3%）〉 MgCl2 （76. 6 % ） 〉 NaCl（54. 5%）. When 4-piperazine-piperidine was added,the f lu x increased. When 3-[（2-aminoethyl）-dimethylammonio] propane-1-sulfonate was added, the flux increased firstly and then decreased with the increase of thismolecule’s content. The salt rejections of all membranes were dropped slightly when small amount of eachmolecule was added, and dropped a lot when they were added too much.